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NetBSD 6.0 Has Shipped
New submitter Madwand sends this quote from the NetBSD Project's announcement that NetBSD 6.0 has been released:
"Changes from the previous release include scalability improvements on multi-core systems, many new and updated device drivers, Xen and MIPS port improvements, and brand new features such as a new packet filter. Some NetBSD 6.0 highlights are: support for thread-local storage (TLS), Logical Volume Manager (LVM) functionality, rewritten disk quota subsystem, new subsystems to handle flash devices and NAND controllers, an experimental CHFS file system designed for flash devices, support for Multiprotocol Label Switching (MPLS) protocol, and more. This release also introduces NPF — a new packet filter, designed with multi-core systems in mind, which can do TCP/IP traffic filtering, stateful inspection, and network address translation (NAT)."
Apparently, I'll never understand Slashdot. The latest junk from Facebook, Microsoft, Amazon, Apple, Oracle, et al. make the front page, but one of the highest quality open source releases gets buried. (It's almost like people self-medicate their marketing these days, but separate issue.)
I got 6 years of uptime once off of NetBSD on sparc. This stuff is gold. It's platinum. It's so stable, you have to worry about making sure you get around to patching your apps because the OS just never dies... stick this on solid state storage with the new NAND support, and you don't even have to worry about spinning disk fails. As a network device OS, this will be an awesome high-uptime packet sensor or embedded packet router.
Bravo NetBSD! Keep up the good work. This is top headline stuff.
http://tinyurl.com/4ny52
The Darwin kernel (which is called XNU) is a bit weird - I spent some time looking into it when it was still a relatively new thing (2003-4 kind of era). XNU is Mach + FreeBSD + DeviceKit/Apple-y bits, all sharing the same protection domain. The latter point is interesting, since despite the fact Mach is considered a microkernel they've actually shoved all of the other kernel-level services in with it, rather than separating them into different processes. This makes the whole kernel basically monolithic (i.e. like the modern Windows and Linux kernels), which is kind of unexpected!
The Apple-y bits in the kernel that I mentioned definitely includes DeviceKit, their driver interface. Maybe some other stuff as well. The drivers are not normal FreeBSD-like device drivers - I think they're even C++, unlike FreeBSD itself.
I found it all a bit unexpected really, things didn't fit together as I'd imagined.
There's probably more in here; I'm not sure if it's the original one I read through!
https://developer.apple.com/library/mac/#documentation/Darwin/Conceptual/KernelProgramming/About/About.html
Actually...
Apple has utilities from both NetBSD and OpenBSD.
Darwin has code from FreeBSD, NetBSD, and OpenBSD, as well as code from Apple both in kernel space and userland (including the system library - the memory allocator, for example, isn't from any *BSD).
...and there's lots of FreeBSD code in OS X. One obvious example is the property lists API, which is a really odd feature from FreeBSD
No, it's from NeXTStEP, not FreeBSD.
Also, there's a BSD kernel in OS X, which is a process managed by Mach.
Mach manages tasks and threads; UN*X processes are built atop Mach tasks, and pthreads are built atop Mach threads. The "BSD kernel" part of XNU (under the bsd subdirectory) is what implements the "UN*X processes" stuff (among other things, such as the file system and networking mechanisms), and that code runs in both the "kernel task" (the UN*X process for which is pid 0) and in other tasks; it doesn't run in "a" process/task in the sense of "it runs in a single process/task".
Not sure if it was ripped from FreeBSD or NetBSD.
The from-BSD parts of the "BSD kernel" are mostly taken from FreeBSD, but have changed significantly, and the "BSD kernel" has a fair bit of Apple code in it, as well as, for example, Sun (Open Solaris) code (as in "DTrace").
i agree. i'm running netbsd as i type and it has neve
CLI paste? paste.pr0.tips!
Don't bother explaining it yourself, just be a prat when people ask reasonable questions - I'm sure that will bring in more users.
The English word fart is one of the oldest words in the English vocabulary.